Internal-combustion engine.



W. F. KOKEN '& A, J PBCHL INTERNAL COMBUSTION ENGINE.

4 SHEETS-SHEET 1.

film 22% fT/fo/w/va Aura/v u. PIC/11L? Patented Nov. 23, 191

APPLICATION HLED OCT-2. I9I3.

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W. F. KOKEN & A. J. PICHL.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED OCT-2. l9l3,

Patented Nov. 2", 1915.

4 SHEETSSHEET 2- W. F. KOKEN (N A. 1. .PICHL.

INTERNAL COMBUSTiON ENGINE.

APPUCATION FILED 0CT.2. l9I3.

Patented. Nov: 23, 1915.

4 SHEETS SHEET 3.

w. F. KIJK EN III A. I. PICHL.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED OCT-2. I9I3.

LWLQQ. I Patented Nov. 1915.

4 SHEETS SHEET 4.

WALTER F. KOKEN AND ANTON J. PICHL, 013 ST. LOUIS, MlIS$OURL Specification of Letters Patent.

JPatented Nov. 23, ll'll ilti.

[application filed Gctobe'r $3, 1913. Serial No. 793,016.

To (ZZZ whom it may concern:

llc it known that we, WALTER F. liioirnn and ANTON al. Pierre, citizens of the United States, residing at the city of St. Louis, State oi Missouri, have invented certain new and useful Improvements in Internal-Conn bustion Engines, of which the following is a specification.

This invention relates to internal combustion engines ofthe type in which slide valves are employed for governing the admission and exhaust of the gases to and from the cyl inders.

The object of our present invention is to provide a valve-operating mechanism for engines of the type mentioned which is of novel construction and so designed. that certain of the valves which. control the inlet ports of certain cylinders and the exhaust ports of the remaining cylinders will be moved positively in one direction, While the valves that control the ports not governed by the valves first mentioned are lacing moved positively in the opposite direction, said mechanism comprising two positively operated members, each of which actuates a group of valves. v

Figure 1 of the drawings is atop plan view of an internal combustion engine can bodying the present invention; 2 is a side elevation of same; Fig. 3 is a detail sectional view of one of the reciprocating members; Fig. is a longitudinal sectional view of the cylinders showing an alternative arrangement of the valve-operating means; Fig. 5 is an end elevation of the engine showing an alternative arrangement of the valve-operating means; and Fig. 6

.is a side elevation of same.

The cylinders l, 2, 3, and l have the pistons 5 adapted to operate therein, which pistons are connected separately to the cranks (not shown) of the crank-shaft 6 by means of the connecting-rods 7 in the usual manner, said crank-shaft being adapted to rotate in the crank-casing 8 and having the fly-wheel 9 rigidly mounted on one end thereof. Each of said cylinders has an inlet port 10 and an exhaust port ll in its head, which ports register in vertical alinement with inlet and exhaust passages 12 and 1.3, respectively, in the co er it, which is secured to the heads of the several cylinders by bolts 15 or other suitable means. The walls of the passages 12 and 13 project up wardly into a water chamber 16 .iin the cover ll, and the top of this chamber is closed by a plate 17, which is secured to said cover by bolts 18 or other suitable means. The inlet passages 12 are separately connected with the branches of the manifold 19, which has the usual. connection with the carburetor 20, and the exhaust passages 13 are separately connected with the branches of the exhaust pipe 21. The water-jacket 22, which surrounds the cylinders, is conimunicatively connected with the waterchamber 18 in the cover it by means of a pipe 23, which is preferably located at one end of the engine, to allow the water which enters .lllO water-jacket 22 through the inlet pipe E l to pass into the water-chamber 16, from which it discharges through the outlet pipe A spark-plug 26 and a priming valve 27 are provided-tor each cylinder, the sparkplugs being preferably located on one side of the engine and the priming-valves being located on the opposite side.

Communication between the inlet ports 10 and the exhaust ports 11 of the cylinders and their resnective inlet passages 12 and exhaust passages 13 is established in proper sequence by means of valves 28, which are adapted to slide horizontally upon the heads of the cylinders and, also, in groove 29 in the bottom of the cover lit as shown in Fig. 4-. lln the case of an engine having four cylinders as illustrated in the drawings, five valves 38 are preferably employed, thetvvo end valves being relatively narrower than the other three intermediate valves. The arrangement ot' the valves 28 is such that the first or end valve, counting from right to left, Fig. 4, is adapted to slide over and control the exhaust port 11 of the cylinder 1, the second valve being adapted to slide over and control the inlet port 10 ofthe cylinder 1 and the exhaust port 11 of the cylinder 2, the third or 'middle valve being adapted to slide over and control the inlet ports-.10 of the cylinders 2 and "l, the fourth valve being adapted to slide over and can trol the exhaust port ll of the cylinder 3 and the inlet port it] of the cylinder 4', and the fifth or last valve being adapted to slide over and control the exhaust port 11 of the cylinder 4:.

The first, third and fifth valves are directly connected together so that they will move i in and constitute one group of valves :A'n coiiperate with all of cylinders to control the inlet ports of certain cylinders and the exhaust ports of the remaining cylinders. The second and fourth valves are also directly connected together so that they will move in unison and constitute a second group of valves that coiiperate with all of the cylinders to control the ports that are not governed by the group of valves first referred to. The mechanism for actuating said valves consists of two positively operated members, each of which reciprocates one group of valves back and forth, said members bein preferably operated directly from the cran shaft of the engine. In the embodiment of our invention illustrated in Fig. 2 a pair of rods 36 are employed for connecting each group of valves to the particular member that operates said group, said member consisting of a lever.

Each rod 36 extends through an opening in one end of the cover 14, and the outer end v outwardly-projecting arms 44 of a bracket 45 by a pin 46 or the like, said bracket having a pair of inwardly-projecting arms 47, which arms 47 straddle a lug 48 borne by the cylinder casing and have slots 49 to receive a bolt 50 or a plurality ofsuch bolts, by means of which said bracket is adjustably secured to said lug. Each lever 43 has another longitudinal bore 42 in its lower end, in whichthe upper end of a pin or rod 51 is slidably fitted. Each pin or rod 51 is provided at its lower end with a ball 52 which fits in a socket 53 in areciprocatory member 54, which is preferably dis-shaped and is slidably supported in a pair of oppositely-disposed grooves 55 in a pair of brackets 56, the latter being arranged in spaced parallel relation and being secured to the crank casing 8 by bolts 57 or other suitable means. Each member 54 bears a downwardly projecting shank 58, the lower end of the latter being preferably bifurcated and having an arcuate blade or Shoe 59 riveted or otherwise secured to and between its prongs 60, which blade or shoe is preferably rigid and seats in a cam groove 61, which may be formed either in the periphery of a band 62 rigidly mounted on the fly-wheel 9, or, if desired, in the periphery of the hywheel. Each cam groove 61 consists of a right-hand screw-thread groove and a lefthand screw-thread groove, which screwthread grooves cross at their middle points and connect at their ends so as to make the cam groove continuous, the crossing point vof one of the cam grooves 61 being preferably located substantially 180 degrees from the crossing point of the other cam groove 61. By this arrangement, when the crankshaft 6 is rotated, the blades 59 travel in the cam grooves 61 and thereby reciprocate the members 54 in the grooves 55 in the brackets 56, whereby said members rock the levers 43, which, in turn, cause the valve-rods 36 to reciprocate the valves 28, with the result of causing the latter to establish communication between the inlet ports 10 and exhaust ports 11 of the cylinders and their respective inlet passages 12 and exhaust passages 13 in the cover 14 in proper sequence.

'hile we prefer to design the engine so that the power or firing strokes of the pistons 5 occur in the cylinders 1, 2, 3, and 4 in the following order, viz., 1, 3, 4, 2 yet, it should be understood that, the crani: the crank-shaft may be arranged so that the power or firing strokes of the pistons-i01- low in any other desired sequence, in which event the valves 28 would be so arranged and their movements so timed as to open and close the inlet ports 10 and exhaust ports 11 of the cylinders in the proper order. Furthermore, the engine may have a greater or less number of cylinders, in which case a greater of less number of valves 28 would be employed and would be so arranged and their movements so timed as to open and close the inlet ports 10 and exhaust ports 11 of the cylinders in the proper sequence.

' In order to lubricate the valves 28, pipes (33 load from a receptacle 64, which contains a lubricant, to pipes (55, to the upper ends of which pipes (35 said pipes (33 are connected in any suitable manner, said pipes 65 being preferably located directly .above the cylinders 1. 2, 3, and 4, respectively. Each pipe 43.? extends through an opening in the plate 1? and has its upper portion screw-tlnraded to receive a nut (36 or the like, by means of which gasket 67 is held in place to make the junction of said pipe 65 with said plate 17 water-tight, the lower end of said pipe (35 being scre\\'-threadcd to fit in a screw threaded opcnin'g'bd in the cover 14, which opening 68 communicates with the groove 29.

Instead of en'iploying levers or rockable members to actuate the valves, the valve rods 36 can be directly connected with the reciprocating members 54, as shown in Fig. 4, or otherwise operated directly from the crank shaft of the engine. In this form of our invention the valve-rods 36 are relatively longer and have their outer end portions bent downwardly, the outer end of each being provided with anenlargementv 90 having a screw-threaded opening to receive a pin 51, which is, also, screw-threaded. By this arrangement, the valvc-rods 36 are operated directly from the reciprocating members 54, it being, of course, observed that the positions of the blades 39 in the cam grooves 61 are changed so that the valves 1o 82, which 555 having" longitudinal bores 89' to so 28 through the to of the valves to spirit of the goresent nieinao t valve-operating mechanism depicted in Figs.

and 6, the band 62 is provided with only one cam groove 81 and the blades 59 are located. diametrically opposite each other in said groove, the members 54 borne by-said to blades being reciprocatively supported in grooves 55 in separate pairs of b ackets 56, which brackets 56 may be secured to the crank-casing 8 by bolts 57 or other suitable means. A bracket SLhaving a pair of arms arms straddle a lug 83 borne'by the cylinder casing and lmvevslots 8% formed therein to receive a bolt 85 or plurality of such bolts, by means of vvhich'said bracket adjustably secured to said lug, has a pair at of levers pivotally attached thereto by 87 or the like, the

means of a pin or bolt upper ends of said levers having longitudinail bores 88 to receive the free ends of the iins -10 and the lower ends of said levers upwardlyturned ends of the pins 51, respectively. By this arrangement, the blades 59 travel in the same cam groove, 61 and cause members to reciprocate the valves medium at n'ieinbers 5%, .pins 51, levers 86, pins 40, and valve-rods so as to ctt'ect the opening and closing of the inlet ports 10 and exhaust ports 11 ot the cylinders in the proper sequence.

From the foregoing it will be seen that valve mechanism of the construction above ocscribed is simple construction, coinprises very fevv parts and is positive in its operation, the mechanism for actuating all consisting of only two positively operated members, each of which imparts movement to a separate and distinct group of slide valves, which groups are so designed and arranged that the gases will 4.5 he admitted to and exhausted from the cylinoers proper sequence Various changes in the details of construction and arrangement of parts maybe made without departing from the nature and invention. it should be understood that the portions cl cam grooves 61 where the pitch are formed Wide enough to permit the blades 59 to travel therethrough.

receive the W e claim:

1. In an internal combustion engine, the combination of a cylinder having an inlet port and an exhaust port, reciprocating valves controlling said ports, a device connected to each valve, a pair of rocking members provided with 'telescoped portions to which said devices are connected, and means for nositively actuating said rocking members.

2. In an internal, combustion engine, the combination of a cylinder having an inlet port and an exhaust port in its head, reciprocating valves controlling said ports, a rod connected to each valve and having a member pivoted therctoya pair of rocking mem' be s having telescoping connections with said pivoted members, and means operati ely connected with. the [iv-wheel for actuating said rockingmembers.

3. In an internal combustion engine, the combination of a cylinder having an inlet and an exhaust port in its head, rcciprocating valves controlling said ports, a rod connected to each valve and having a member pivoted thereto, a pair of rocking members having telescoping connections with said pivoted members, an adjustable support for said rocking n'ielnbers, and means operatively connected with the llynvbeel tor actuating said rocking members.

4 In an internal combustion engine, the combination of a cylinder having an inlet port and an exhaustport in its head, rcciprocating valves controlling said ports, a rod connected to each valve and having a member pivoted thereto, a pair of rocking l'l'lfilllbelS having telescoping connections with said pivoted members, a pair of rcciprocating members opcratively connected with the llyn'vheel, and a pair of members having telescopingconnections with said rocking inen'ibers and. also, ballan ,l--socket connectioi'lswith said rcciprocatin5 members.

in testimony whereof We hereunto ailix our signatures in the presence of two \vitnesses.

llUilJlllCR l1. KOKEN. ANTON J. PlGllL, Witnesses:

H. D. PARRY, ll. l LONELADY.

It is hereby certified that in Lott /oars Poi-om; No 1,161,225). grouivd Novombor 23,

1915, upon the application of Walter F. KOliQIl and Anton J. Pkzlxl, of St. Louis,

Missouri for an improvement in Internal-Combustion Engines, on error appears in the printed specification requiring correction as follows: lago l:' l 1!l3 4 .2, for tho compound word dis-shaped read disk-shaped; and that; the said Letters Patent should be read with this oorreotion therein thee the some may conform to the record of the case in the F'otont Signed and sealed this 14th day of December, A, 1) 3.915.

R. 15, WHITEHEAD,

[SEAL] mm} :1? mar Patents. Cl. 123-93. 

